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Facebook Inc. is the parent company of several subsidiaries, including popular social media platforms such as Instagram and WhatsApp. These subsidiaries operate semi-independently under the umbrella of Facebook Inc., allowing them to maintain their own branding and user base while benefiting from the resources and infrastructure of the larger company. This structure allows Facebook Inc. to diversify its offerings and reach a wider audience while maintaining control over its various platforms. **

Sword Art Online 2 can be watched for free on certain streaming platforms that offer a free trial period, such as Hulu, Crunchyroll, and Funimation. However, after the trial period, a subscription may be required to continue watching the series. Additionally, some episodes may be available for free on platforms like YouTube or Tubi, but the availability of these episodes may vary. It's important to note that the availability of free streaming options may change over time, so it's best to check the current options before trying to watch the series for free. **

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Yes, you can watch Sword Art Online Progressive independently of Sword Art Online. Sword Art Online Progressive is a retelling of the original Sword Art Online story, focusing more on the Aincrad arc and providing additional details and character development. While having knowledge of the original Sword Art Online series may enhance your understanding of certain references and characters, it is not necessary to enjoy Sword Art Online Progressive as a standalone series. **

Yes, one can watch Sword Art Online Progressive independently of Sword Art Online. Sword Art Online Progressive is a retelling of the original Sword Art Online story from the perspective of Asuna, focusing on the early floors of Aincrad. While it is set in the same world and timeline as Sword Art Online, Progressive can be enjoyed as a standalone series without needing to have watched the original Sword Art Online. **

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One can watch Sword Art Online on various streaming platforms such as Netflix, Hulu, Crunchyroll, and Funimation. Additionally, the anime series may also be available for purchase or rental on platforms like Amazon Prime Video, Google Play Movies & TV, and iTunes. Sword Art Online may also be available on certain cable or satellite TV channels that specialize in airing anime content. **